Dioxygen reactivity of copper and heme-copper complexes possessing an imidazole-phenol cross-link

E Kim, K Kamaraj, B Galliker, ND Rubie…

Index: Kamaraj, Kaliappan; Kim, Eunsuk; Galliker, Benedikt; Zakharov, Lev N.; Rheingold, Arnold L.; Zuberbuehler, Andreas D.; Karlin, Kenneth D. Journal of the American Chemical Society, 2003 , vol. 125, # 20 p. 6028 - 6029

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Citation Number: 41

Abstract

As synthetic models for the heme a 3-CuB active site in cytochrome c oxidases, we describe dioxygen reactivity studies for copper and the heme-copper systems which contain a cross- linked imidazole-phenol group. This investigation includes (i) detailed kinetic and thermodynamic properties of the 1/O2 reaction and (ii) characterization of a new heme- peroxo-copper complex 4 by various spectroscopies. The possible roles/effects of the ...